Efficient rice stone selecting machine

Abstract

The utility model relates to the technical field of rice stone sorting, in particular to an efficient rice stone sorting machine which comprises a base and a cylinder, the cylinder is fixedly connected to the right side of the upper end of the base, a first shell is fixedly connected to the front end of the left side of the cylinder, two collecting boxes are placed on the left side of the upper end of the base, and a fan is installed at the end of the base. An air outlet of the fan is fixedly communicated with an air outlet pipe, and a rice stone selecting structure is arranged on the outer wall of the air outlet pipe. Through cooperation of the rice stone sorting structure and the air outlet pipe, due to the fact that gravity component force is larger than buoyancy force, stones are close to the lower end of the sorting box, slide into a second discharging opening and then slide into a collecting box on the right side through the second discharging opening, rice is lifted to the upper layer, the stones are close to the lower layer of the inclined face, and finally separation is achieved at the upper discharging opening and the lower discharging opening at the left end. And the problems of eye dryness and visual fatigue caused by separation of the stones from the rice through manual visual discrimination and manual operation are avoided.

Description

Technical Field

[0001] This utility model relates to the field of rice stone sorting technology, specifically a high-efficiency rice stone sorting machine. Background Technology

[0002] Stones are hard and difficult to detect when mixed into rice. If accidentally ingested during cooking or eating, they can damage teeth, mouth and digestive tract, posing a health hazard. Therefore, a rice stone sorting machine is needed to remove stones from rice.

[0003] For example, a rice screening machine with authorization announcement number "CN220387048U" uses an antistatic mechanism to remove static electricity from the rice. Filter bags and other equipment are installed at the exhaust end of the suction fan to collect the discharged dust, thus achieving the purpose of dust removal and improving the cleanliness of the rice. Traditional rice screening with pebbles (manual stone picking) was a common method in early rice processing. It mainly relied on manual visual identification and operation to separate the pebbles from the rice. Focusing on the subtle differences between rice grains and pebbles for extended periods can easily lead to dry eyes and visual fatigue. Utility Model Content

[0004] The purpose of this invention is to solve the problem of dry eyes and visual fatigue that easily occurs when manually separating stones from rice by visual identification and manual operation, and to propose a high-efficiency rice stone sorting machine.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Design a high-efficiency rice stone sorting machine, including a base and a cylinder. The cylinder is fixedly connected to the upper right side of the base, and a first housing is fixedly connected to the left front end of the cylinder. The first housing has an adjustable discharge plate angle structure inside. Bends are fixedly connected to both sides of the left end of the cylinder. Two collection boxes are placed on the upper left side of the base. A fan is installed at the end of the base. The air outlet of the fan is fixedly connected to an air outlet pipe. The outer wall of the air outlet pipe has a rice stone sorting structure.

[0007] Preferably, the discharge plate angle adjustment structure includes a round rod and a second housing. The outer wall of the round rod is rotatably connected to the first housing via a bearing. A disc is fixedly connected to the outer wall of the round rod. The end of the round rod is fixedly connected to a handle. The inner wall of the first housing is fixedly connected to the second housing. A spring is provided inside the second housing. The two ends of the spring are fixedly connected to the second housing and a crossbar, respectively. The outer wall of the crossbar is slidably connected to the second housing. The end of the crossbar abuts against a groove machined on the disc. A cylinder is fixedly connected to the front end of the crossbar. The outer wall of the cylinder is slidably connected to the first housing.

[0008] Preferably, the outer wall of the end of the round rod is rotatably connected to the bending block via a bearing, and the outer wall of the round rod is fixedly connected to the discharge plate.

[0009] Preferably, the rice sorting structure includes a sorting box, the lower end of which is fixedly connected to an air outlet pipe, the inner wall of the lower end of the sorting box is provided with multiple air outlets, the upper left side of the sorting box is provided with a first discharge port, the left end of the first discharge port is fixedly connected to a hose, the end of the hose extends into the collection box on the left side, and the lower left side of the sorting box is provided with a second discharge port.

[0010] Preferably, the right end of the cylinder is threadedly connected to the servo motor via bolts, and the output shaft of the servo motor is rotatably connected to the cylinder via a sealed bearing.

[0011] Preferably, the output shaft of the servo motor is fixedly connected to an auger, and the upper end of the cylinder is fixedly connected to the feed inlet.

[0012] The present invention proposes a high-efficiency rice stone sorting machine, the advantages of which are as follows: through the combination of the rice stone sorting structure and the air outlet pipe, the stones, due to the gravity component being greater than the buoyancy, adhere to the lower end of the sorting box and slide down to the second discharge port. From the second discharge port, they slide into the collection box on the right. The rice, due to buoyancy being close to gravity, is semi-suspended in the upper layer. Under the action of the gravity component, it slowly drifts to the left and moves to the first discharge port. After flowing through the hose, it finally flows into the collection box on the left. The airflow forms a velocity gradient in the sorting box, lifting the rice to the upper layer and the stones adhering to the lower layer of the inclined surface. Finally, they are separated at the upper and lower discharge ports on the left end. This avoids the problems of dry eyes and visual fatigue caused by manually identifying and separating stones from rice. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 for Figure 1 A front sectional view;

[0015] Figure 3 for Figure 1 Front sectional view of the first shell

[0016] Figure 4 for Figure 3 A partial top sectional view;

[0017] Figure 5 for Figure 2 Partial top-down cross-section of the discharge plate

[0018] Figure 6 for Figure 2 Enlarged view of section A;

[0019] Figure 7 This is a 3D view of the discharge plate.

[0020] In the diagram: 1. Base, 2. Cylinder, 3. First housing, 4. Discharge plate angle adjustment structure, 401. Round rod, 402. Round disc, 403. Handle, 404. Second housing, 405. Spring, 406. Crossbar, 407. Cylinder, 5. Bend, 6. Discharge plate, 7. Rice stone sorting structure, 701. Sorting box, 702. Air outlet, 703. First discharge port, 704. Hose, 705. Second discharge port, 8. Collection box, 9. Fan, 10. Air outlet pipe, 11. Feed inlet, 12. Servo motor, 13. Screwdriver. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] See attached document Figure 1-7 In this embodiment, a high-efficiency rice stone sorting machine includes a base 1 and a cylinder 2. The cylinder 2 is fixedly connected to the upper right side of the base 1, and a first housing 3 is fixedly connected to the left front end of the cylinder 2. A maintenance door is installed at the upper end of the first housing 3. An outlet plate angle adjustment structure 4 is provided inside the first housing 3. Bending blocks 5 are fixedly connected to both sides of the left end of the cylinder 2. Two collection boxes 8 are placed on the upper left side of the base 1. A fan 9 is installed at the end of the base 1. The air outlet of the fan 9 is fixedly connected to the air outlet pipe 10. A rice stone sorting structure 7 is provided on the outer wall of the air outlet pipe 10.

[0023] The outer wall of the end of the round rod 401 is rotatably connected to the bending block 5 through a bearing. The round rod 401 rotates inside the bending block 5 through the bearing. The outer wall of the round rod 401 is fixedly connected to the discharge plate 6. The right end of the cylinder 2 is threadedly connected to the servo motor 12 through a bolt. The servo motor 12 is mounted on the cylinder 2 through a bolt. The output shaft of the servo motor 12 is rotatably connected to the cylinder 2 through a sealed bearing. The output shaft of the servo motor 12 rotates inside the cylinder 2 through the sealed bearing. The output shaft of the servo motor 12 is fixedly connected to the auger 13. The upper end of the cylinder 2 is fixedly connected to the feed port 11. A rubber plug is installed inside the feed port 11.

[0024] See attached document Figure 1-5The discharge plate angle adjustment structure 4 includes a round rod 401 and a second housing 404. The outer wall of the round rod 401 is rotatably connected to the first housing 3 through a bearing. The round rod 401 rotates inside the first housing 3 through a bearing. A disc 402 is fixedly connected to the outer wall of the round rod 401. The end of the round rod 401 is fixedly connected to a handle 403. The inner wall of the first housing 3 is fixedly connected to the second housing 404. A spring 405 is provided inside the second housing 404. The two ends of the spring 405 are fixedly connected to the second housing 404 and the crossbar 406, respectively. The model of the spring 405 is selected according to actual needs, and only needs to meet the working requirements are selected.

[0025] The outer wall of the crossbar 406 is slidably connected to the second housing 404. The crossbar 406 slides inside the second housing 404. The end of the crossbar 406 abuts against the groove machined in the disc 402. The crossbar 406 limits the movement of the disc 402. A cylinder 407 is fixedly connected to the front end of the crossbar 406. The outer wall of the cylinder 407 is slidably connected to the first housing 3. The cylinder 407 slides inside the first housing 3.

[0026] See attached document Figure 1 , Figure 2 and Figure 6 The rice sorting structure 7 includes a sorting box 701. The lower end of the sorting box 701 is fixedly connected to the air outlet pipe 10. Multiple air outlets 702 are provided on the inner wall of the lower end of the sorting box 701. A first discharge port 703 is provided on the upper left side of the sorting box 701. The left end of the first discharge port 703 is fixedly connected to the hose 704. The end of the hose 704 extends into the collection box 8 on the left side. A second discharge port 705 is provided on the lower left side of the sorting box 701.

[0027] Working principle

[0028] When using a high-efficiency rice stone sorting machine:

[0029] Angle adjustment of discharge plate 6:

[0030] Hold cylinder 407 and move it to the right. The movement of cylinder 407 causes the horizontal bar 406 to move (as shown). Figure 4 The movement of the crossbar 406 compresses the spring 405 until the crossbar 406 moves out of the groove of the disc 402. The handle 403 is then rotated, causing the round rod 401 and the disc 402 to rotate. The rotation of the round rod 401 causes the discharge plate 6 to rotate. Since there are various sizes of rice grains, larger grains fall faster, so the angle of rotation of the handle 403 is smaller. The outer wall of the disc 402 has multiple grooves, corresponding to various rotation angles of the disc 402. The discharge plate 6 is rotated to a suitable angle, and the crossbar 406 is reset through the cylinder 407, thereby limiting the disc 402 and preventing the discharge plate 6 from rotating on its own.

[0031] Feeding:

[0032] Remove the rubber stopper. The inside of the feed inlet 11 is fitted with a rubber stopper. Pour the rice, which has been screened and has a uniform particle size, into the cylinder 2 through the feed inlet 11. Connect the external power supply to the servo motor 12. The output shaft of the servo motor 12 rotates, driving the auger 13 to rotate (e.g., ...). Figure 2 The auger 13 rotates, causing the rice inside the cylinder 2 to move to the left onto the discharge plate 6. The discharge plate 6 has height on both sides to prevent the rice from flowing out from the sides. Due to gravity and the thrust of the auger 13, the rice is transported to the sorting box 701. The blower 9 is turned on. After the blower 9 is powered on, the blades on the impeller push the air, giving the air energy and forming a directional airflow. According to Bernoulli's principle, the faster the fluid velocity, the lower the pressure. The air velocity is high and the pressure is low in the central area of ​​the impeller. The surrounding air flows continuously towards the center of the impeller under the action of atmospheric pressure, thus forming a continuous and stable airflow. The airflow blows through the air outlet to the air outlet pipe 10, and then blows through the air outlet 10 and through the air outlet hole 702 to directly act on the mixture of rice and stones.

[0033] Because the sorting box 701 is set at an angle (e.g.) Figure 2 Therefore, the gravity (vertically downward) of the rice mixture can be decomposed into two components: a downward component along the slope, driving the material to slide from the high end to the low end of the slope; and a component perpendicular to the slope, causing the material to adhere tightly to the slope and resist the frictional force of the slope. Because the gravitational force of the pebbles is greater than the buoyancy, they adhere close to the lower end of the sorting box 701 and slide down to the second discharge port 705, then slide into the collection box 8 on the right. The rice, due to buoyancy approaching gravity, is semi-suspended in the upper layer and slowly moves downwards under the influence of the gravitational force. The airflow drifts to the left and moves to the first discharge port 703. After flowing through the hose 704, it finally flows into the collection box 8 on the left. The airflow forms a velocity gradient in the sorting box 701 (higher airflow velocity in the upper layer and lower airflow velocity in the lower layer). Light materials (rice) are lifted to the upper layer, while heavy materials (pebbles) are close to the lower layer of the slope. Finally, they are separated at the upper and lower discharge ports on the left. It should be further noted that the sorting box 701 is installed on the air outlet pipe 10 by screws, and the distance between the air outlets 702 is smaller than the volume of rice and pebbles.

[0034] Although the rice is lifted upwards by the airflow, it is still subject to the component of gravity along the inclined plane within the sorting box 701 (regardless of weight, as long as it is on the inclined plane, the component of gravity points to the lower end). Due to the low friction of the rice, this component of gravity is sufficient to push it slowly to the lower end. The role of the airflow is to keep it in the upper layer to avoid mixing with stones. This design uses the component of gravity on the inclined plane and the buoyancy of the airflow to stratify the materials, allowing materials of different densities to move to the same lower end. However, because they are in different layers (upper / lower), they are discharged from the two discharge ports on the left end respectively, achieving efficient separation. After the rice is sorted for stones, the fan 9 and servo motor 12 are turned off, the rubber plug is inserted into the feed port 11, and the two collection boxes 8 are removed, thus completing the working process of the high-efficiency rice stone sorting machine.

[0035] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A high-efficiency rice stone picker, comprising a base (1) and a cylinder (2), the upper end of the right side of the base (1) is fixedly connected with the cylinder (2), characterized in that: The first housing (3) is fixedly connected to the left front end of the cylinder (2). The first housing (3) is provided with a discharge plate angle adjustment structure (4). Both sides of the left end of the cylinder (2) are fixedly connected with bent blocks (5). Two collection boxes (8) are placed on the upper left side of the base (1). A fan (9) is installed at the end of the base (1). The air outlet of the fan (9) is fixedly connected to the air outlet pipe (10). The outer wall of the air outlet pipe (10) is provided with a rice selection stone structure (7).

2. The efficient rice picking machine as claimed in claim 1, wherein: The discharge plate angle adjustment structure (4) includes a round rod (401) and a second housing (404). The outer wall of the round rod (401) is rotatably connected to the first housing (3) through a bearing. A disc (402) is fixedly connected to the outer wall of the round rod (401). The end of the round rod (401) is fixedly connected to a handle (403). The inner wall of the first housing (3) is fixedly connected to the second housing (404). A spring (405) is provided inside the second housing (404). The two ends of the spring (405) are fixedly connected to the second housing (404) and a crossbar (406) respectively. The outer wall of the crossbar (406) is slidably connected to the second housing (404). The end of the crossbar (406) abuts against the groove processed by the disc (402). A cylinder (407) is fixedly connected to the front end of the crossbar (406). The outer wall of the cylinder (407) is slidably connected to the first housing (3).

3. The high-efficiency rice stone sorting machine according to claim 2, characterized in that: The outer wall of the end of the round rod (401) is rotatably connected to the bent block (5) through a bearing, and the outer wall of the round rod (401) is fixedly connected to the discharge plate (6).

4. The efficient rice picking machine as claimed in claim 1, wherein: The rice sorting structure (7) includes a sorting box (701), the lower end of which is fixedly connected to an air outlet pipe (10). The inner wall of the lower end of the sorting box (701) is provided with multiple air outlets (702). The upper left side of the sorting box (701) is provided with a first discharge port (703). The left end of the first discharge port (703) is fixedly connected to a hose (704). The end of the hose (704) extends into the collection box (8) on the left side. The lower left side of the sorting box (701) is provided with a second discharge port (705).

5. The high-efficiency rice stone sorting machine according to claim 1, characterized in that: The right end of the cylinder (2) is threadedly connected to the servo motor (12) by bolts, and the output shaft of the servo motor (12) is rotatably connected to the cylinder (2) by a sealed bearing.

6. The high efficiency rice picking machine as claimed in claim 5, wherein: The output shaft of the servo motor (12) is fixedly connected to the auger (13), and the upper end of the cylinder (2) is fixedly connected to the feed inlet (11).

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